CAN blocking

This example application shows how to use the CAN module to transmit and receive normal CAN messages in polling mode.

Description

This application transmits CAN message to CAN Bus and receives CAN message from CAN Bus. To run this application, an evaluation board and Microchip CAN Bus Analyzer is required . They act as different nodes on the CAN bus. While running the application, user can send and receive CAN messages between the board and the analyzer.

Downloading and building the application

To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/can/can_normal_operation_blocking/firmware .

To build the application, refer to the following table and open the project using its IDE.

Setting up the hardware

The following table shows the target hardware for the application projects.

Setting up PIC32MZ Embedded Connectivity with FPU (EF) Starter Kit

• To run the demo, the following additional hardware are required:
  • Microchip CAN Bus Analyzer
  • PIC32MZ Starter Kit Adapter Board
  • Starter Kit I/O Expansion Board
  • CAN/LIN PICtail (Plus) Daughter Board
• Install Microchip CAN Bus Analyzer software on PC
• Connect J1 connector on board to J1 connector on PIC32MZ Starter Kit Adapter Board
• Short (close) Pin1 to Pin2 of JP1 on PIC32MZ Starter Kit Adapter Board
• Short (close) Pin1 to Pin2 of JP3 on PIC32MZ Starter Kit Adapter Board
• Connect J2 connector on PIC32MZ Starter Kit Adapter Board to J1 connector on Starter Kit I/O Expansion Board
• Connect J4 connector on Starter Kit I/O Expansion Board to J7 connector on CAN/LIN PICtail (Plus) Daughter Board
• Connect Microchip CAN Bus Analyzer to P1 connector on CAN/LIN PICtail (Plus) Daughter Board using female to female DB9 serial cable
• Connect Microchip CAN Bus Analyzer to PC using USB Male-A to Male Mini-B cable
• Connect the Debug USB port on the board to the computer using a mini USB cable
• Connect the USB to UART port on the board to the computer using a mini USB cable

Running the Application

1. Build and program the application project using its respective IDE

2. Open Microchip CAN Bus Analyzer software and make the following configurations:

   Description	Settings
   CAN Bitrate Control	500 Kbps
   CAN Mode Control	Normal Mode
   Bus Termination Control	ON

3. Connect to the DEBUG UART Virtual COM port and configure the serial settings as follows:
   • Baud : 115200
   • Data : 8 Bits
   • Parity : None
   • Stop : 1 Bit
   • Flow Control : None
4. Press ‘1’ to transmit message to CAN Bus on console window of the board
5. “Transmitting Message:Success” will be displayed in the console window of PIC32MK GP DB board board
6. CAN message will be displayed in the CAN analyzer software
7. Press ‘2’ to receive message from CAN Bus on console window of the board
8. Send following CAN message from CAN analyzer software
   • ID : 0x469, DLC : 8, Data: 1, 2, 3, 4, 5, 6, 7, 8

9. CAN message will be displayed in the terminal window of PIC32MK GP DB board

   

10. LED toggles at each message transmission or reception

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